Effect of Mn inclusion in superconducting YBCO-based composites

Regnier, S.; Alfred-Duplan, C.; Vacquier, G.; Marfaing, J.

doi:10.1016/0964-1807(96)00009-9

Cited by 8 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, the sintering temperature was decreased at a rate of 7"Cmin-', in an O2 atmosphere, with a 2 h step at 450°C. Finally, the samples were cooled to 200"C, at a rate of 1.5"C min-l and air quenched, as detailed elsewhere (Regnier et al 1996). Different characterizations were carried out on the samples:…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

Lambert

Debierre

Albinet

et al. 1999

Philosophical Magazine B

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

“…Random composites, prepared by mixing several materials, have attracted wide interest because of their potential use in a variety of applications (Rogalla and Blank 1997) and in fundamental studies (Barash Yu et al 1996, Mannhart et nl. 1996, Tang et al 1996.…”

mentioning

confidence: 99%

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

Lambert

Debierre

Albinet

et al. 1999

Philosophical Magazine B

View full text Add to dashboard Cite

“…Or there may be a slight Mg poisoning of DyBCO grown on MgO, which reduces T c [34]. Meanwhile, Mn possibly diffusing into DyBCO grown on LMO would not poison it [35]. Also assuming a similar J c (T/T c ) dependence for all these samples, higher T c values easily explain higher J c values.…”

Section: Film Thicknessmentioning

confidence: 99%

La₁₋ _x Mn₁₋ _y O_3± _δ buffer layers on inclined substrate deposited MgO templates for coated conductors

Troshyn

Hoffmann²,

Große³

et al. 2021

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Most commercial high-temperature superconducting coated conductors based on ion beam assisted MgO deposited templates use LaMnO3 (LMO) films as the terminating buffer layer. In contrast, coated conductors based on inclined substrate deposition (ISD)-MgO technology are still produced with homoepitaxial (homoepi)-MgO as the cap layer. In this work we report on the deposition of LMO buffer layers on ISD-MgO/homoepi-MgO by electron beam physical vapor deposition. The growth parameters of textured LMO films were studied systematically and their properties were optimized regarding the critical current density (J c) of the subsequently deposited DyBa2Cu3O7−δ (DyBCO) superconducting films. LMO films without outgrowths at the surface were obtained at growth rates of up to 4 Å s−1. Despite the formation of non-stoichiometric LMO films containing 59% La, single-phase films were obtained at substrate temperatures below 775 °C and at oxygen partial pressures of up to 4 × 10−4 mbar due to a large homogeneity region towards La. The J c values of DyBCO films deposited on LMO were found to be independent of the LMO thickness in a range from 50 nm to 450 nm. DyBCO films on LMO reach J c = 0.83 MA cm−2 at 77 K in zero applied field. This value is up to 30% higher than those of DyBCO films grown directly on homoepi-MgO. The wide range of LMO growth parameters and higher J c values of DyBCO on LMO compared to DyBCO on homoepi-MgO make this material attractive for its use in manufacturing coated conductors based on ISD-MgO technology.

show abstract

“…These competing phenomena, occurring at local scale in the interphase of multilayers, could also take place even at closer scale length, in a powder sample built up of an ordered intergrowth between octahedra containing Cu and Mn alternatively. At this point, it should be mentioned that some studies focused on CMR and HTSC coexistence have been performed either in manganates or cuprates by doping with Cu and Mn, respectively. , In general, the diamagnetic signal decreases when YBa 2 Cu 3 O 7 and La 2‑ x Sr x CuO 4 related phases are doped with Mn , although SC and FM can coexist at very low doping levels. When Cu is introduced in La 1‑ x Sr x MnO 3 , FM double exchange interactions are destroyed, whereas new AFM interactions are created and the resistivity drastically increases …”

Section: Introductionmentioning

confidence: 99%

“…At this point, it should be mentioned that some studies focused on CMR and HTSC coexistence have been performed either in manganates or cuprates by doping with Cu and Mn, respectively. 16,17 In general, the diamagnetic signal decreases when YBa 2 Cu 3 O 7 18 and La 2-x Sr x CuO 4 related phases are doped with Mn 17,19 although SC and FM can coexist at very low doping levels. When Cu is introduced in La 1-x Sr x MnO 3 , FM double exchange interactions are destroyed, whereas new AFM interactions are created and the resistivity drastically increases.…”

Section: ■ Introductionmentioning

confidence: 99%

Magnetoresistance and Ferromagnetism in Disordered LaCu_0.5Mn_0.5O₃ Perovskite

et al. 2013

View full text Add to dashboard Cite

Magnetoresistance (MR) in half doped copper LaCu0.5Mn0.5O3 manganese related perovskite, synthesized by means of a soft chemistry pathway, is reported. Characterization by means of Rietveld refinement from powder X-ray diffraction data, SAED, HREM, and EELS indicates a random occupation of Cu2+ and Mn4+ at the octahedral sites of an orthorhombic perovskite lattice. This disordered situation is in agreement to the absence of charge ordering. LaCu0.5Mn0.5O3 exhibits antiferromagnetic behavior related to Mn4+–O–Mn4+ and Cu2+–O–Cu2+ interactions. Ferromagnetic interactions are also evident as a consequence of a disordered arrangement of Cu2+ and Mn4+ over the octahedral sites, being the coexistence of these ferromagnetic superexchange interactions related to the observed MR behavior at low temperature.

show abstract

Effect of Mn inclusion in superconducting YBCO-based composites

Cited by 8 publications

References 26 publications

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

La₁₋ _x Mn₁₋ _y O_3± _δ buffer layers on inclined substrate deposited MgO templates for coated conductors

Magnetoresistance and Ferromagnetism in Disordered LaCu_0.5Mn_0.5O₃ Perovskite

Contact Info

Product

Resources

About

Effect of Mn inclusion in superconducting YBCO-based composites

Cited by 8 publications

References 26 publications

Temperature dependence of the resistivity in Au─YBa2Cu3Oxsintered composites

Temperature dependence of the resistivity in Au─YBa2Cu3Oxsintered composites

La1− x Mn1− y O3± δ buffer layers on inclined substrate deposited MgO templates for coated conductors

Magnetoresistance and Ferromagnetism in Disordered LaCu0.5Mn0.5O3 Perovskite

Contact Info

Product

Resources

About

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

Temperature dependence of the resistivity in Au─YBa₂Cu₃O_xsintered composites

La₁₋ _x Mn₁₋ _y O_3± _δ buffer layers on inclined substrate deposited MgO templates for coated conductors

Magnetoresistance and Ferromagnetism in Disordered LaCu_0.5Mn_0.5O₃ Perovskite